Amazon River Valley--Discovery and exploration--AmericanSouth America--Discovery and explorationAmazon River Valley--Description and travelBrazil--Description and travelPeru--Description and travelBolivia--Description and travel Expeditions--history

Amazon River Valley--Discovery and exploration--AmericanSouth America--Discovery and explorationAmazon River Valley--Description and travelBrazil--Description and travelPeru--Description and travelBolivia--Description and travel Expeditions--history

Amazon River Valley--Discovery and exploration--AmericanSouth America--Discovery and explorationAmazon River Valley--Description and travelBrazil--Description and travelPeru--Description and travelBolivia--Description and travel Expeditions--history